Home / 99,312.05-148,768.63-45,929.21

Finding the Fourth Proportional to 99,312.05, 148,768.63 and 45,929.21

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Solution

The fourth proportional to 99,312.05, 148,768.63 and 45,929.21 is: 68,801.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,312.05 : 148,768.63 = 45,929.21 : x
  2. Step 2: Convert to fraction form
    99,312.05/148,768.63 = 45,929.21/x
  3. Step 3: Cross multiply
    99,312.05x = 148,768.63 × 45,929.21
  4. Step 4: Simplify right side
    99,312.05x = 6,832,824,790.02
  5. Step 5: Solve for x
    x = 6,832,824,790.02/99,312.05
  6. Step 6: Final answer
    x = 68,801.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.